This is a 5 day event. It will run from 13th to 18th February.
New girl is Cupid. Reach stage 1250 to get her.
Patch notes:
https://forum.hentaiheroes.com/index.php?/topic/12847-patch-notes-week-7/
Undocumented change:
When arriving at last stage (1250) there is no event girl dialogue. You'd be working on an ordinary boss girl instead.
New UI elements: